Nihonmatsu clan

Mutsu-Hatakeyama held Nihonmatsu Castle saw its power gradually diminish over the course of the Sengoku period, becoming vassals of the Ashina clan. The Mutsu-Hatakeyama

between the Date clan and their traditional rivals the Nihonmatsu clan. The Nihonmatsu allied with the Sōma, Satake, Nikaido, and Ashina clans. The allies

Japan. Throughout most of the Edo period, Nihonmatsu Castle was home to the Niwa clan, daimyō of Nihonmatsu Domain. The castle was also known as "Kasumi-ga-jō"

Nihonmatsu Yoshikuni. He was the 14th head of the Nihonmatsu clan (a branch of the Hatakeyama clan) of Mutsu. In 1568, Yoshitsugu was attacked by Date

became the head of the Date clan in 1584, two years after the death of Oda Nobunaga, destroyed the Nihonmatsu clan and other clans, and then in 1589, at the